text: try:
      from urllib import quote_plus #python 2
  except:
      pass
  
  try:
      from urllib.parse import quote_plus #python 3
  except: 
      pass
  
  from django.contrib import messages
  from django.contrib.contenttypes.models import ContentType
  from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
  
  from django.db.models import Q
  from django.http import HttpResponse, HttpResponseRedirect, Http404
  from django.shortcuts import render, get_object_or_404, redirect
  from django.utils import timezone
  
  from comments.forms import CommentForm
  from comments.models import Comment
  from .forms import PostForm
  from .models import Post
  
  
  
  def post_create(request):
  	if not request.user.is_staff or not request.user.is_superuser:
  		raise Http404
  		
  	form = PostForm(request.POST or None, request.FILES or None)
  	if form.is_valid():
  		instance = form.save(commit=False)
  		instance.user = request.user
  		instance.save()
  		# message success
  		messages.success(request, "Successfully Created")
  		return HttpResponseRedirect(instance.get_absolute_url())
  	context = {
  		"form": form,
  	}
  	return render(request, "post_form.html", context)
  
  def post_detail(request, slug=None):
  	instance = get_object_or_404(Post, slug=slug)
  	if instance.publish > timezone.now().date() or instance.draft:
  		if not request.user.is_staff or not request.user.is_superuser:
  			raise Http404
  	share_string = quote_plus(instance.content)
  
  	initial_data = {
  			"content_type": instance.get_content_type,
  			"object_id": instance.id
  	}
  	form = CommentForm(request.POST or None, initial=initial_data)
  	if form.is_valid() and request.user.is_authenticated():
  		c_type = form.cleaned_data.get("content_type")
  		content_type = ContentType.objects.get(model=c_type)
  		obj_id = form.cleaned_data.get('object_id')
  		content_data = form.cleaned_data.get("content")
  		parent_obj = None
  		try:
  			parent_id = int(request.POST.get("parent_id"))
  		except:
  			parent_id = None
  
  		if parent_id:
  			parent_qs = Comment.objects.filter(id=parent_id)
  			if parent_qs.exists() and parent_qs.count() == 1:
  				parent_obj = parent_qs.first()
  
  
  		new_comment, created = Comment.objects.get_or_create(
  							user = request.user,
  							content_type= content_type,
  							object_id = obj_id,
  							content = content_data,
  							parent = parent_obj,
  						)
  		return HttpResponseRedirect(new_comment.content_object.get_absolute_url())
  
  
  	comments = instance.comments
  	context = {
  		"title": instance.title,
  		"instance": instance,
  		"share_string": share_string,
  		"comments": comments,
  		"comment_form":form,
  	}
  	return render(request, "post_detail.html", context)
  
  def post_list(request):
  	today = timezone.now().date()
  	queryset_list = Post.objects.active() #.order_by("-timestamp")
  	if request.user.is_staff or request.user.is_superuser:
  		queryset_list = Post.objects.all()
  	
  	query = request.GET.get("q")
  	if query:
  		queryset_list = queryset_list.filter(
  				Q(title__icontains=query)|
  				Q(content__icontains=query)|
  				Q(user__first_name__icontains=query) |
  				Q(user__last_name__icontains=query)
  				).distinct()
  	paginator = Paginator(queryset_list, 8) # Show 25 contacts per page
  	page_request_var = "page"
  	page = request.GET.get(page_request_var)
  	try:
  		queryset = paginator.page(page)
  	except PageNotAnInteger:
  		# If page is not an integer, deliver first page.
  		queryset = paginator.page(1)
  	except EmptyPage:
  		# If page is out of range (e.g. 9999), deliver last page of results.
  		queryset = paginator.page(paginator.num_pages)
  
  
  	context = {
  		"object_list": queryset, 
  		"title": "List",
  		"page_request_var": page_request_var,
  		"today": today,
  	}
  	return render(request, "post_list.html", context)
  
  
  
  
  
  def post_update(request, slug=None):
  	if not request.user.is_staff or not request.user.is_superuser:
  		raise Http404
  	instance = get_object_or_404(Post, slug=slug)
  	form = PostForm(request.POST or None, request.FILES or None, instance=instance)
  	if form.is_valid():
  		instance = form.save(commit=False)
  		instance.save()
  		messages.success(request, "<a href='#'>Item</a> Saved", extra_tags='html_safe')
  		return HttpResponseRedirect(instance.get_absolute_url())
  
  	context = {
  		"title": instance.title,
  		"instance": instance,
  		"form":form,
  	}
  	return render(request, "post_form.html", context)
  
  
  
  def post_delete(request, slug=None):
  	if not request.user.is_staff or not request.user.is_superuser:
  		raise Http404
  	instance = get_object_or_404(Post, slug=slug)
  	instance.delete()
  	messages.success(request, "Successfully deleted")
  	return redirect("posts:list")
  